Agent for ameliorating brain hypofunction

Abstract

Provided are effective and highly safe agents, medicaments and the like for ameliorating various disorders caused by brain hypofunction. Also provided is a preventing or ameliorating agent for brain hypofunction containing N-acetyl-D-mannosamine, a pharmaceutical composition for preventing, ameliorating or treating disorders due to brain hypofunction, containing an effective amount of N-acetyl-D-mannosamine and a pharmaceutically acceptable carrier, and a food comprising N-acetyl-D-mannosamine added thereto.

The invention claimed is: 
     
       1. A method of ameliorating or treating a sleep interruption due to premature arousal in a subject in need thereof, comprising administering an effective amount of N-acetyl-D-mannosamine to the subject. 
     
     
       2. A method of ameliorating a sleep interruption due to premature arousal in a subject in need thereof, comprising allowing an effective amount of N-acetyl-D-mannosamine to be taken by the subject. 
     
     
       3. The method of  claim 2 , wherein the subject is a human. 
     
     
       4. The method of  claim 1 , wherein the subject is a human.